Using the example of a Czech morpheme "micro", the paper shows several possibilities for how to decisively use language features to incorporate the item into a draft of dictionary-entry list. Quantity of occurrences, quantity of lemmas, frames of word-formation, parts of speech and especially quantity of lemmas inside frequency ranks are discussed. The result of the paper is that we can use a graph showing the quantity of lemmas inside frequency ranks as linguistic evidence and make the boundary for the draft entry list accordingly.